Introduction
SharePoint has transformed from an on-premises collaboration portal to a cloud-based, low-code digital workplace integrated deeply into Microsoft 365. With this transformation, the customization model has evolved, moving from server-side solutions to client-side (SPFx), Power Platform integration, and PnP provisioning.
This article explores all major SharePoint customization options, their capabilities, limitations, and which areas remain non-customizable in the modern experience.
Types of SharePoint Customization
| Type | Technology / Tools | Scope | Supported In |
|---|---|---|---|
| Out-of-the-Box Configuration | Site settings, List views, JSON formatting | Basic UI and list customization | Modern + Classic |
| SPFx (SharePoint Framework) | React, TypeScript, REST API | Web parts, extensions, app customizers | Modern |
| Power Platform Integration | Power Apps, Power Automate, Power BI | Forms, workflows, dashboards | Modern + Classic |
| PnP Scripting / Provisioning | PnP PowerShell, CLI for M365 | Site templates, provisioning automation | Modern + Classic |
| Branding & Theming | JSON theme, site header/footer | corporate design consistency | Modern |
| Classic Server-Side Customization | Master pages, .WSP, Farm Solutions | Full control (Legacy only) | Classic only |
1. Out-of-the-Box (OOTB) Customization
Best For: No-code configuration of lists, libraries, and navigation.
You can
Configure lists, libraries, and metadata.
Use JSON to format views and columns.
Adjust site navigation and permissions.
Apply OOTB site templates (Team / Communication).
You cannot
Change site structure or inject custom scripts.
Modify system pages or modern layouts.
Example
Use JSON view formatting to convert a list into a visually appealing card grid.
2. SharePoint Framework (SPFx)
Best For: Modern UI web parts, extensions, and deep integration.
You can
Build custom React-based web parts.
Create Application Customizers for headers/footers.
Use Field Customizers for special column rendering.
Add Command Sets to list toolbars.
Integrate with Microsoft Graph and REST APIs.
You cannot
Override or replace Microsoft-managed page layouts.
Modify core system pages (e.g., settings or permissions pages).
Change suite navigation or modern shell components.
Example
A dashboard web part that pulls live metrics from Power BI or Azure DevOps using Graph API.
3. Power Platform Integration
Best For: Rapid automation, form customization, and business processes.
| Component | Purpose | Integration with SharePoint |
|---|---|---|
| Power Apps | Custom forms & mobile apps | Replace SharePoint list forms |
| Power Automate | Workflows & process automation | Trigger on item create/update |
| Power BI | Analytics and reporting | Embed dashboards in pages |
Limitations
Power Apps cannot alter the site UI beyond forms.
Flow triggers depend on available connectors.
Power BI embedding requires licensing and permissions.
4. Branding & Theming
Best For: Corporate look and feel consistency.
You can
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